Ksport CNS140-RR Version RR Road Race Coilover Kit

The Ksport Version RR Road Race Coilover Kit (CNS140-RR) is an aggressive, track-focused suspension system engineered exclusively for road racing. Featuring stiffer spring rates and purpose-built shock valving, it delivers maximum handling responsiveness with a 20–30mm shorter shock stroke optimized for track surface conditions. This kit is intended for race use only and is not recommended for street or daily driving.

36-Way Adjustable Damping

With 36 levels of damping adjustment, the Version RR allows precise fine-tuning of suspension feel and handling balance. Compression and rebound are adjusted simultaneously from the top of the coilover, simplifying on-track setup changes. A baseline starting point is easily established, and incremental adjustments let drivers dial in their ideal setup corner by corner.

Monotube High-Pressure Shock Design

The CNS140-RR utilizes a high-pressure monotube shock construction in which the oil and gas are separated within the cylinder. Compared to twin-tube designs, the monotube configuration dissipates heat faster and more evenly, allows for finer damping adjustments, and significantly reduces the risk of aeration and cavitation — resulting in more consistent damping performance during extended track sessions.

Upgraded Bumpstops

Each Version RR kit includes upgraded shock bumpstops to prevent the damper from bottoming out over uneven pavement or aggressive track conditions, protecting the suspension system and maintaining predictable handling at the limit.

Lightweight, Durable Construction

Mounts, collars, and spring perches are machined from 6061-T6 billet aluminum, keeping overall weight low while delivering excellent strength and corrosion resistance. Steel shock bodies are electroplated with zinc for added protection against rust and the elements. An anti-rust paste packet is included for application to critical coilover areas for additional longevity.

Pillow Ball Upper Mounts

Pillow ball upper mounts are included on applicable configurations, providing a more direct, mechanical connection between the chassis and suspension. This eliminates the compliance found in rubber OEM mounts and enhances steering feel and driver feedback. On many applications, the pillow ball mount also enables camber and caster adjustment without the need for a separate camber kit.

Custom Spring Rates Available

Each shock is valved specifically to match the installed spring rates. Customers may choose from Ksport's proven rate recommendations or specify custom spring rates — the shocks will be valved accordingly for optimal balance and reliability.

Key Features:

• Purpose-built for road racing — race use only, not street legal
• Aggressive spring rates and valving for maximum on-track performance
• 20–30mm shorter shock stroke optimized for track conditions
• 36-way simultaneous compression and rebound damping adjustment
• Monotube high-pressure design with oil/gas separation
• Upgraded bumpstops to prevent shock bottoming
• 6061-T6 billet aluminum mounts, collars, and spring perches
• Zinc electroplated steel shock bodies for corrosion resistance
• Pillow ball upper mounts on select applications
• Camber and caster adjustment available on many models
• Custom spring rate valving available
• 12-month limited warranty covering manufacturer defects
• Built to order — allow 2–3 weeks for production and delivery

Note: Ksport Version RR kits are built to order. Please allow approximately 2–3 weeks for production and delivery.